Marks attends Davidson High School in Mobile

Marks’ high school coach at Davidson in Mobile, Fred Riley, announced the commitment on Twitter on Friday afternoon.

The 6-foot-3, 260-pound Marks is expected to develop into an interior lineman with the Boilermakers.

"He played defensive end for us at 250 pounds, but he will be 300 there and move inside,” Riley told al.com. “I think he'll be a great player. He loves football. He's a wonderful kid who loves to practice, loves the locker room and everything that comes with being a football player. In fact, we had to teach him to slow down some in practice."

As of Friday, Marks is the 21st known commitment - and the third defensive linemen - in coach Jeff Brohm’s 2018 recruiting class. The early signing period begins Wednesday.

Riley told al.com that Marks will sign Wednesday and plans to enroll at Purdue in January. Arizona quarterback Jack Plummer and Staten Island receiver Amad Anderson are expected to enroll in January after signing next week.

The Boilermakers are hosting several recruits on official visits this weekend, including Louisville Trinity receiver Rondale Moore. Moore is committed to Texas and a visit to Purdue would signal the 5-foot-8 playmaker is considering other options.

Brohm is also a graduate of Trinity, which won the Class 6A state championship this season. Moore was named Kentucky’s Gatorade Player of the Year earlier this week after catching 109 passes for 1,478 yards and 16 touchdowns.